Highly active PtRuFe/C catalyst for methanol electro-oxidation

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High methanol electro-oxidation activity was obtained on novel PtRuFe/C (2:1:1 at.%) catalyst. Mass and specific activities were 5.67 A g(-1) catal. and 177 mA m(-2) for the PtRuFe/C catalyst while those of the commercial PtRu/C catalyst were 2.28 A g(-1) catal. and 87.7 mA m(-2), respectively. CO stripping results showed that on-set voltage for CO electro-oxidation was lowered by incorporation of Fe. XRD and XPS results revealed that Fe2O3 was formed instead of Fe(0), which resulted in large electron deficiency in Pt and easy CO electro-oxidation. The electron deficiency of Pt was proved by XPS results of Pt4f peaks, which moved to higher binding energies in PtRuFe/C than PtRu/C. (c) 2007 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE INC
Issue Date
2007-09
Language
English
Article Type
Article
Keywords

FE ALLOY ELECTRODE; COMBINATORIAL ELECTROCHEMISTRY; FUEL-CELLS; OXIDATION; ELECTROCATALYSTS; NANOPARTICLES; ACID; CO

Citation

ELECTROCHEMISTRY COMMUNICATIONS, v.9, no.9, pp.2163 - 2166

ISSN
1388-2481
DOI
10.1016/j.elecom.2007.06.014
URI
http://hdl.handle.net/10203/18268
Appears in Collection
CBE-Journal Papers(저널논문)
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